<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <!-- <link href="css/test01.css" rel="stylesheet"/> -->
</head>
    <!-- 选择器{属性:值}
         选择器:你要选择的目标-->
<style>
    /*
    h1{
        color:blue;
        }
    */

    @import url(css/test01.css);
</style> 

<body>
    
    <!--<h1 style="color: red;">我爱你中国!</h1> -->
    <h1>我爱你中国!</h1>
</body>
</html>